Charles W. Einolf

Fiber optic broadband networks for the Manufacturing Automation Protocol

An approach that permits the networking of broadband data over optical fiber is presented. This local area network (LAN) is a broadband network that allows the use of multiple carrier frequencies and thus multiple services. For example, multiple network formats, such as the Manufacturing Automation Protocol (MAP), broadband Ethernet, and the PC network, can coexist on the same optical fiber in addition to other broadband services such as video.<<ETX>>

Fiber Optics For Broadband Networking Applications

Computers have revolutionized the factory floor as well as the office environment. As a result, there has been a dramatic increase in the amount of information constantly exchanged between shop-floor computers that control and monitor plant equipment and among myriad office workers with individual desk-top computers. This widespread use of distributed processing has naturally led to the need for reliable data communication links. A unique approach has been developed which permits the networking of broadband data over optical fiber. This Local Area Network is a broadband network which utilizes analog techniques for communications. Analog methods allow for the use of multiple carrier frequencies and thus multiple services. For example, multiple networks such as the Manufacturing Automation Protocol, Broadband Ethernet, and the PC Network can coexist on the same optical fiber in addition to other broadband services such as video.

Fiber Optic Broadband LAN For The Manufacturing Automation Protocol

Distributed computer processing has led to the need for data communications over reliable links. This paper discusses the use of fiber optics in Manufacturing Automation Protocol (MAP) factory networks -- its potential and limitations. A fiber optic MAP system is described which provides completely compatible fiber optic interconnections for all 10 Mb/s broadband MAP equipment. The system uses innovative techniques to support broadband MAP as well as other broadband services such as video.

Communication Techniques for a Microprocessor Based Digital Radiation Monitoring System

The advent of microprocessors has added a new dimension to industrial measurement and control. Nuclear instrumentation has not been excluded. One system which has recently been introduced is a digital radiation monitoring system. The system is based upon a distributed microprocessor approach. Each monitor is self-contained. The monitor consists of one or more detectors along with a microprocessor-based data processing module. Complementing the system is a centrally location communications station. The communications station is an intelligent link between the operator and the remote monitors. Particular attention is given to the communication system. Communication techniques are utilized to achieve maximum operating flexibility, reliability and availability. The techniques used to attain these objectives are presented.

A Computerized Axial Power Distribution Monitoring System for Pressurized Water Reactors

Minicomputer implementation has proven successful in developing the Axial Power Distribution Monitoring System (APDMS) which is used to monitor the axial power shape within some pressurized water reactors. The APDMS and its main subsystems are described. A control subsystem interfaces the APDMS to existing plant equipment. A dedicated minicomputer is introduced into the system to enhance its capabilities. The features of the minicomputer subsystem are described. The computer is also capable of performing continuous on-line testing and self-checking. Techniques for improving system availability and security are presented. Current operating experience has demonstrated that the APDMS serves a useful function in plant operation. In addition, the computer subsystem has demonstrated its reliability and practicality in the plant environment.